Enhancing Weak Signal Transmission Through a Feedforward Network

Autor(es)

Liang, Xiaoming ^[1] ; Zhao, Liang ^[1] ; Liu, Zonghua ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Math & Comp Sci, BR-13560970 Sao Carlos, SP - Brazil

^[2] E China Normal Univ, Inst Theoret Phys, Shanghai 200062 - Peoples R China

^[3] E China Normal Univ, Dept Phys, Shanghai 200062 - Peoples R China

• Tipo de documento: Artigo Científico
• Fonte: IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS; v. 23, n. 9, p. 1506-1512, SEP 2012.
• Citações Web of Science: 4

Resumo

The ability to transmit and amplify weak signals is fundamental to signal processing of artificial devices in engineering. Using a multilayer feedforward network of coupled double-well oscillators as well as Fitzhugh-Nagumo oscillators, we here investigate the conditions under which a weak signal received by the first layer can be transmitted through the network with or without amplitude attenuation. We find that the coupling strength and the nodes' states of the first layer act as two-state switches, which determine whether the transmission is significantly enhanced or exponentially decreased. We hope this finding is useful for designing artificial signal amplifiers. (AU)

• Processo FAPESP: 11/03631-6 - Comportamentos coletivos de neurônios em redes complexas
• Beneficiário: Zhao Liang
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional
• Processo FAPESP: 11/50151-0 - Fenômenos dinâmicos em redes complexas: fundamentos e aplicações
• Beneficiário: Elbert Einstein Nehrer Macau
• Modalidade de apoio: Auxílio à Pesquisa - Temático